Betaine HCl (betaine hydrochloride) is a compound formed by combining betaine — a naturally occurring substance found in beets, spinach, and whole grains — with hydrochloric acid. In supplement form, it is used to provide supplemental gastric acid, supporting the stomach's ability to acidify its contents during digestion.
The role of stomach acid in digestion
Hydrochloric acid (HCl) is produced by parietal cells in the stomach lining. It serves several critical functions: it denatures dietary proteins, making them accessible to pepsin (the main protein-digesting enzyme); it activates pepsinogen into pepsin; it sterilises ingested food by killing most pathogens; and it creates the acidic environment needed for the absorption of key minerals including iron, calcium, magnesium, and zinc, as well as vitamin B12.
When stomach acid production is insufficient — a condition called hypochlorhydria — digestion becomes less efficient. Proteins may not be fully broken down, mineral absorption declines, and the risk of bacterial overgrowth in the small intestine may increase.
Who may have low stomach acid?
Gastric acid production naturally declines with age — studies show that hypochlorhydria affects a significant proportion of adults over 60. Other associations include long-term proton pump inhibitor (PPI) or antacid use, Helicobacter pylori infection, chronic stress (which suppresses parietal cell function), and autoimmune conditions affecting the stomach lining.
Betaine as a methyl donor
Beyond its HCl component, betaine itself is an important methyl group donor in the body's one-carbon metabolism pathway. Betaine donates a methyl group to homocysteine, converting it to methionine. Elevated homocysteine is an independent risk factor for cardiovascular disease, and betaine supplementation has been shown in clinical trials to reduce plasma homocysteine by 9–20% depending on baseline levels and dose.
Dosage
Betaine HCl is typically taken immediately before or with protein-containing meals — usually 1–3 capsules depending on meal size. The standard approach is to start with one capsule and increase gradually. It should not be taken without food, and should not be used by people taking NSAIDs, aspirin, or corticosteroids, as combining these with additional acid can irritate the stomach lining.
Recent research
- Meal-Time Supplementation with Betaine HCl for Functional Hypochlorhydria — Integrative Medicine, 2020. Authors: Guilliams TG, Drake LE. Gastric pH measurements confirmed significant acid lowering following betaine HCl ingestion in fasted subjects.
- Inhibition of gastric acid secretion reduces zinc absorption in man — Journal of the American College of Nutrition, 1991. Authors: Sturniolo GC et al. Zinc absorption from food increased proportionally to gastric acid output as measured by intragastric pH monitoring.
- Is achlorhydria a cause of iron deficiency anaemia? — American Journal of Clinical Nutrition, 2015. Authors: Betesh AL et al. Ferric iron solubility increased significantly as gastric pH decreased from 7 to 2 in standardised dissolution assays.
Buy Betaine HCl in Lebanon
NOW Foods Betaine Supplement 648mg is available at Supplements & More Lebanon — imported from the United States, original sealed packaging — with cash on delivery across all Lebanese regions.